A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 6135-00-826-4798
NSN 6320-01-140-6441
NSN 5925-00-836-4575
NSN 5920-00-211-4512
NSN 5925-01-396-2999
NSN 6105-01-613-9315
NSN 5915-00-156-7877
NSN 6145-00-813-1734
NSN 6145-01-448-9332
NSN 5960-01-030-1304
NSN 5910-01-538-4623
NSN 6145-01-379-5128